Lava Beds National Monument, CASelected Caves and Lava-Tube Systems
U.S. Geological Survey Bulletin 1673
Author: Aaron C. Waters, Julie M. Donnelly-Nolan, and Bruce W. Rogers
Publisher: U.S. Government Printing Office, Washington. 1990.
Library of Congress Catalogue Number: 90-3661
Number of Pages: 102
A nice introduction to the lava tubes around Lava Beds National Monument. It includes detailed descriptions and photos of the features covered.